LOCKING DEVICE FOR PEDAL VEHICLES

Abstract

A locking device for pedal vehicles includes: a first bushing; a first bearing mounted in a first housing of the first bushing; a second bushing; a second bearing mounted in a second housing of the second bushing; and a cylindrical body. A shaft is rotatably mounted in the first and second bushing and in the cylindrical body through the first and the second bearing. A lock is operatively connected to the pin to move the pin radially between a radially retracted position, with the pin lying outside of the radial seat, and a radially extracted position, with the pin lying at least partially in the radial seat and preventing rotation of the shaft with respect to the cylindrical body and a sleeve. The shaft integrates a latching mechanism for a safety jack being constrained or constrainable to a safety chain which enables tethering the vehicle, for example, to a pole.

Claims

1. A locking device for pedal vehicles, comprising: a first bushing configured to be mounted and secured to a first axial end of a sleeve hosting a central movement of the pedal vehicle; a first bearing mounted in a first housing of the first bushing; a second bushing configured to be mounted and secured to a second axial end of the sleeve; a second bearing mounted in a second housing of the second bushing; a cylindrical body which is an integral part of the first or second bushing and it is configured to be inserted into the sleeve, wherein the cylindrical body has a radial seat open radially at least towards the inside; a shaft having opposite ends configured to be rigidly constrained to respective pedals, wherein the shaft is rotatably mounted in the first and second bushing and in the cylindrical body through the first and the second bearing; a lock integrated into the shaft and provided with a respective key; at least one pin at least partially housed in the shaft; wherein said lock is operatively connected to the pin to move the pin radially between a radially retracted position, in which the pin lies outside of the radial seat, and a radially extracted position, in which the pin lies at least partially in the radial seat and prevents rotation of the shaft with respect to the cylindrical body and to the sleeve; wherein at least one between the first and the second housing is open axially towards the outside to allow access to the respective bearing.

2. The device according to claim 1, wherein the first and/or the second housing is/are axially external to the sleeve of the vehicle frame and wherein the first and/or the second bearing is/are axially external to the sleeve of the vehicle frame.

3. The device according to claim 1, wherein the shaft has a substantially constant diameter all along its axial extension and wherein the shaft has a diameter smaller than an inner diameter of the first and second bushing and of the cylindrical body all along its axial extension.

4. The device according to claim 1, wherein an axial end of the cylindrical body of the first bushing is connected to the second bushing or vice versa and wherein the cylindrical body extends substantially for the entire length of the sleeve that houses it.

5. The device according to claim 1, wherein an access opening of the lock for the key is placed on a first axial end of the shaft.

6. The device according to claim 1, wherein the locking device further comprises a latching mechanism for a safety jack, wherein said jack is constrained or constrainable to a safety chain; wherein said latching mechanism is internal to the shaft.

7. The device according to claim 6, wherein the shaft has an auxiliary access opening in communication with the latching mechanism, for the insertion of the safety jack.

8. The device according to claim 6, wherein the latching mechanism is operatively connected to the lock and is operable by means of said key.

9. The device according to claim 8, wherein the safety jack is snap fittable to the latching mechanism and the key allows to free said jack from said latching mechanism.

10. The device according to claim 7, wherein the auxiliary access opening is placed on a second axial end of the shaft, opposite to the first axial end.

11. The device according to claim 1, wherein the key mechanical or electronic.

12. The device according to claim 11, wherein the electronic key is of a contact type.

13. The device according to claim 11, wherein the electronic key is in contactless or is configured for controlling the lock remotely.

14. The device according to claim 13, wherein the lock comprises a transceiver for dialoguing with an electronic key remotely.

15. The device according to claim 14, wherein the electronic lock is configured for dialoguing with an application present on an electronic device, and the electronic key is contained in and managed by said electronic device.

Description

DESCRIPTION OF THE DRAWINGS

[0054] This description will be set out below with reference to the attached drawings, provided solely for indicative and therefore non-limiting purposes, in which:

[0055] FIG. 1 shows a view partially in section of a sleeve of a bicycle frame provided with a device according to the present invention;

[0056] FIG. 2 shows a schematic and section view of a shaft belonging to the device of the preceding figure;

[0057] FIG. 3 shows a partial view of the shaft of FIG. 2 in a different operating configuration;

[0058] FIG. 4 frontally shows a shaft element in the configuration of FIG. 2; and

[0059] FIG. 5 shows the element of FIG. 4 in the configuration of FIG. 3.

DETAILED DESCRIPTION

[0060] With reference to the mentioned figures, reference number 1 denotes in its entirety a locking device for pedal vehicles.

[0061] The FIG. 1 illustrates a sleeve 2 of a bicycle. The bicycle is of known type and therefore is not illustrated in its entirety.

[0062] The device 1 is a part of the central movement of the bicycle and comprises a shaft 3 which extends along a rotation axis X-X coaxial to the sleeve 2. The shaft 3 also has a first and a second end 4, 5 which are axially opposite one another. The opposite ends 4, 5 each have an external knurling and pedals 6 7 are mounted on them (the arms but not the cranks are visible) of the bicycle, which rotate solidly with the shaft 3. The second end 5 of the shaft 3 also bears at least a crown wheel 8 of the bicycle.

[0063] The shaft 3 has a cylindrical profile having a circular section with a substantially constant diameter.

[0064] The device 1 comprises a first bushing 9 configured to be mounted and secured to a first axial end 10 of the sleeve 2. In appended FIG. 1, the first bushing 9 forms a single piece, obtained for example by machining from a blank or by moulding, with a cylindrical body 11. The first bushing 9 has an annular portion 12 having a larger diameter than the internal seating 13 delimited by the sleeve 2 while the cylindrical body 11 has a slightly smaller diameter than said internal seat 13. The annular portion 12 has an abutment surface that is perpendicular to the rotation axis X-X and destined to enter into contact with the first axial end 10 of the sleeve 2 when the cylindrical body 11 is inserted in the internal seat 13 of the sleeve 2. In proximity of the abutment surface, the cylindrical body 11 has an external threading 14 which is engaged by screwing with a corresponding internal threading of the sleeve 2 so as to block the first bushing 9 and the cylindrical body 11 on the frame of the bicycle. In this configuration, the cylindrical body 11 extends internally of the internal seat 13 almost up to a second end 15 of the sleeve 2, axially opposite the first end 10.

[0065] The first bushing 9 delimits, at the annular portion 12, a first annular housing 16 that is coaxial to the rotation axis X-X. The first housing 16 is axially open towards the outside, i.e. on the opposite side with respect to the sleeve 2. The first housing 16 hosts a first ball bearing 17. The annular portion 12 and the first bearing 17 remain external of the internal seat 13 of the sleeve 2 and the first bearing 17 remains visible from outside, unless covered by a dust cover, including when the device 1 is completely mounted. The first bearing 17, once mounted in the respective housing 16, lies substantially flush with an end edge of the respective first bushing 9.

[0066] The device 1 comprises a second bushing 18 configured to be mounted and secured to the second axial end 15 of the sleeve 2.

[0067] In appended FIG. 1, the second bushing 18 has an annular portion 19 with a larger diameter than the internal seat 13 and a cylindrical portion 20 having a diameter that is slightly smaller than said internal seat 13 and substantially identical to the diameter of the cylindrical body 11.

[0068] The annular portion 19 has an abutment surface that is perpendicular to the rotation axis X-X and destined to enter into contact with the second axial end 15 of the sleeve 2 when the cylindrical portion 20 is inserted in the internal seat 13 of the sleeve 2. In proximity of the abutment surface, the cylindrical portion 20 has an external threading 21 which is engaged by screwing with a corresponding internal threading of the sleeve 2 so as to block the second bushing 18 and the cylindrical portion 20 on the frame of the bicycle. In this configuration, the cylindrical portion 20 is unremovably joined, for example jointed, to an axial end of the cylindrical body 11. The threading of the first and second bushing 9, 18 are opposite one another.

[0069] The second bushing 18 delimits, at the annular portion 19 thereof, an annular second housing 22 that is coaxial to the rotation axis X-X. The second housing 22 is axially open towards the outside, i.e. on the opposite side with respect to the sleeve 2. The second housing 22 hosts a second ball bearing 23. The annular portion 19 and the second bearing 23 remain external of the internal seat 13 of the sleeve 2. The second bearing 23, once mounted in the respective housing 22, lies substantially flush with an end edge of the respective second bushing 18.

[0070] The cylindrical body 11 has a radial seat 24 defined by a through-opening extending through a lateral wall of the cylindrical body 11. In the non-limiting illustrated embodiment, the radial seat 24 is located at about halfway along the axial length of the seat 13 of the sleeve 2.

[0071] The shaft 3 has a diameter that is smaller than an inner diameter of the first and second bushing 9, 18 and of the cylindrical body 11 along the whole axial extension thereof. The shaft 3 is mounted in the first and second bushing 9, 18 and in the cylindrical body 11 and is supported by the first and second bearing 17, 23 so as to be able to rotate about the rotation axis X-X with respect to the bushings 9, 18 and the cylindrical body 11 and therefore also with respect to the sleeve 2.

[0072] The shaft 3 is illustrated schematically but in any case in more detail in FIG. 2. The shaft 3 integrates, internally thereof, a security lock 25 (known and therefore illustrated only schematically) operable by means of a security key 26 inserted in an access opening 27 of the lock 25. The access opening 27 is placed on the first axial end 4 of the shaft 3.

[0073] The shaft 3 further hosts a pin 28 located at a halfway zone of the shaft 3. The pin 28 passes through a radial hole 29 afforded in a lateral wall 30 of the shaft 3.The lock 25 is operatively connected to the pin 28 so as to move it radially between a radially retracted position and a radially extracted position.

[0074] In the radially retracted position (FIG. 3) the pin 28 lies retracted internally of the shaft 3 or flush with the lateral wall 30 and outside the radial seat 24 of the cylindrical body 11. In this configuration, the shaft 3 is free to rotate in the sleeve 2.

[0075] In the radially extracted position (FIG. 2), the pin 28 projects radially from the lateral wall 30 and lies at least partly in the radial seat 24. In this configuration, the pin 28 prevents the rotation of the shaft 3 relative to the cylindrical body 11 and therefore relative to the sleeve 2. The pedals 6, 7 are thus blocked, i.e. they cannot rotate relative to the frame and cannot be used for operating the bicycle.

[0076] In the embodiment illustrated in FIG. 2, the shaft 3 comprises a main transmission 31 operatively interposed between the lock 25 and the pin 28 and configured for transforming the rotational motion of the key 26 in the linear and radial movement of the pin 28.

[0077] The main transmission 31 comprises a disc 32 solidly connected to the lock 25 by means of a spindle 33 that is coaxial to the rotation axis X-X and provided with a cam member 34, i.e. a shaft jointed to the disc 32 in a offset position with respect to the centre of said disc 32. The rod 34 is parallel to the rotation axis X-X and passes through a slot 35 fashioned in a base portion of the pin 28. The slot 35 is profiled in such a way that the rotation of the spindle 33, determined by the rotation of the key 26, determines, via the rotation of the disc 32 and an arched movement of the rod 34, a radial displacement of the pin 28.

[0078] A spring 36 is positioned between the pin 28 and a portion of the lateral wall 30 of the shaft 3 for pushing the pin 28 towards the extracted position. The action of the key 26 is assisted by the thrust of said spring 36 during the blocking of the device 1.

[0079] The shaft 3 further comprises a latching mechanism 37 for a safety jack 38. The safety jack 38 is of a known type, and has, at a terminal end thereof, an annular recess 39 and is connected with a security ring 40. The ring 40 is for example jointed or constrainable to a chain, to a lock or to another element adapted to constrain the jack 38, for example, to a pole or a grate. The latching mechanism 37 is located internally of the lateral wall 30 of the shaft 3.

[0080] An auxiliary access opening 41 (FIG. 2) is located on the second axial end 5 of the shaft 3 and is the communication with the latching mechanism 37. The auxiliary access opening 41 is configured for enabling inserting of the safety jack 38 and the engagement thereof with the latching mechanism 37.

[0081] In particular, the latching mechanism 37 comprises two latching members 42 defined by opposite jaws and radially mobile between a radially contracted position and a radially dilated position. In the radially contracted position (FIG. 2), the radially internal ends 43 of the jaws 42 are inserted in the annular recess 39 and axially retain the jack 38 internally of the auxiliary access opening 41 of the shaft 3. In the radially dilated position (FIG. 3) the radially internal ends 43 are external of the annular recess 39 and the jack 38 can be axially extracted from the auxiliary access opening 41.

[0082] A spring 44 is radially interposed between each of the jaws 42 and the lateral wall 30 of the shaft 3 so as to push the jaws 42 towards the radially contracted position of the annular recess 39. The above-mentioned springs 44 determine the snap-fitting of the safety jack 38. As is visible in FIGS. 2 and 3, the above-mentioned radially internal ends 43 have a wedge profile for facilitating inserting of the safety jack 38 between the two jaws 42 and the radial dilation thereof before the snap-fit which determines the latching of the safety jack 38.

[0083] The latching mechanism 37 is operatively connected to the lock 25 and is operable by means of the security key 26. In particular, the rotation of the key 26 enables bringing the jaws 42 into the radially dilated position in opposition to the thrust exerted by the springs 44, so as to free the jack 38 from the latching mechanism 37.

[0084] For this purpose, the shaft 3 comprises an auxiliary transmission 45 operatively interposed between the lock 25 and the latching mechanism 37, for transforming the rotational motion of the key 26 into the linear and radial movement of the jaws 42.

[0085] The auxiliary transmission 45 comprises an auxiliary disc 46 connected to the cam rod 34 jointed to the auxiliary disc 46 in an offset position relative to the centre of said disc 46.An auxiliary spindle 47 coaxial to the rotation axis X-X extends from the auxiliary disc 46 on the opposite side with respect to the shaft 34. A distal end of said auxiliary spindle 47 bears two tabs or projections 48 which extend radially from the auxiliary spindle 47.

[0086] The projections 48 are located between the two jaws 42, in particular between two base portions 49 of the jaws 42. In the radially contracted position (FIGS. 2 and 4), the two projections 48 lie parallel to and slightly distanced from the base portions 49. In the radially dilated position (FIGS. 3 and 5), the two projections 48 are rotated and push the two jaws 42 distancingly in opposition to the springs 44. The key 26 therefore performs a double function, that of blocking/unblocking the pedals 6, 7 and that of tethering or untethering the bicycle by means of the safety jack 38.

[0087] The shaft 3 with the lock 25, the pin 28, the main transmission 31, the latching mechanism 37 and the auxiliary transmission 45 is a single block pre-mounted in the factory and does not have to be modified/demounted in order to install/de-install the device 1 on the bicycle.

[0088] In use, to mount the device 1 on the bicycle it is sufficient to demount the pedals 6, 7, the crown wheel 8 and the original central movement, mount the shaft 3 in the second bushing 18 with the second bearing 23, tighten the second bushing 18 into the sleeve 2. Thereafter, the first bushing 9, with the cylindrical body 11 and the first bearing 17, is inserted in the opposite side of the sleeve 2 and tightened while the pin 28 is in the retracted position. At this point the pedals 6, 7 are mounted together with the crown wheel 8. To block the rotation of the pedals 6, 7, it is sufficient to insert and rotate the key 26 so as to bring the pin into the cylindrical body 11.

[0089] To demount the device 1, for example for maintenance, it is sufficient to bring the pin 28 into the retracted position, demount the pedal 6 located by the side of the key 26, extract the first bearing 17 using an extractor, unscrew and extract the first bushing 9 and the cylindrical body 11, untighten and extract the second bushing 18 from the opposite side of the shaft 3.